Fast DC discharge device
US6326775A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 5, 2000 |
| Grant date | Dec 4, 2001 |
| Priority date | — |
| Expiry date | Oct 5, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/33576
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fast DC discharge device for a large rated capacity, includes a capacitor (C1), a switch (SW2) serially connected to capacitor (C1), a high voltage transformer (T1), an amplifier (AMP1) connected to the primary coil of high voltage transformer (T1), a switch (SW1) connected between high. voltage transformer (T1) and switch (SW2), a diode (D1) connected in parallel to switch (SW1), and an inductance connected between the secondary coil of high voltage transformer (T1) and switch (SW1), for reducing the instant current during the early stage of discharging, and for protecting switch (SW1) from failure caused by multiple discharges over a long period of time, and a switch (SW3) connected between the output of the amplifier (AMP1) and the primary coil of the high voltage transformer (T1), which is an open circuit during the discharge cycle, so that the transformer (T1) will show an inductive characteristic during the discharge cycle. Resistance (R3) is arranged in parallel with capacitor (C1). After measurement of DC current, switch (SW2) is turned off and switch (SW1) is turned on, so that the output side presents a zero-potential state but charges in capacitor (C1) continue to disc…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.